1305055142 has 4 divisors (see below), whose sum is σ = 1957582716. Its totient is φ = 652527570.

The previous prime is 1305055123. The next prime is 1305055151. The reversal of 1305055142 is 2415505031.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326263784 + ... + 326263787.

It is an arithmetic number, because the mean of its divisors is an integer number (489395679).

Almost surely, 2^1305055142 is an apocalyptic number.

1305055142 is a deficient number, since it is larger than the sum of its proper divisors (652527574).

1305055142 is an equidigital number, since it uses as much as digits as its factorization.

1305055142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652527573.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1305055142 is about 36125.5469439564. The cubic root of 1305055142 is about 1092.8057061739.

The spelling of 1305055142 in words is "one billion, three hundred five million, fifty-five thousand, one hundred forty-two".